Test plug



FIG. 1 is a top right perspective view of a test plug of our design;

FIG. 2 is a bottom left side perspective view thereof;

FIG. 3 is a front left perspective view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right-side elevation view thereof;

FIG. 7 is a left-side elevation view thereof;

FIG. 8 is a rear elevation view thereof; and,

FIG. 9 is a front elevation view thereof. 

CLAIM The ornamental design for the test switch, has shown and described. 